Serena Williams beat Caroline Wozniacki in straight sets to win her sixth US Open and 18th Grand Slam title.
The American, ranked one in the world, won 6-3 6-3 at Flushing Meadows in New York.
After a poor start from both players, Williams steadied herself to take the first set and found something approaching her best form to dominate the second.
The victory moves her to joint-fourth in the all-time list of major winners, alongside Martina Navratilova and Chris Evert.
Williams, 33, has now won three successive titles at the US Open, the scene of her first Grand Slam triumph 15 years ago.
“It was a really wonderful feeling,” said Williams, who was joined by Navratilova and Evert for the trophy presentation, when she also collected US$4m in prize money.
“I couldn’t have finished things in a better way. It is a pleasure for me to win here, I am really emotional. I couldn’t ask to do it at a better place.”
Wozniacki, a close friend of Williams, said: “Congratulations to Serena. She really deserved it today and played better than me.
“She is an inspiration to me on and off the court and an unbelievable friend – and you definitely owe drinks later!”
Williams arrived in New York having failed to make it past the fourth round of a Grand Slam in 2014, but the American looked a class apart throughout the two weeks at Flushing Meadows.
Her dominance was such that she won the title without dropping a set, or more than three games in a single set.
The case for Wozniacki heading into the final centred around the Dane’s improved form this summer, which saw her push Williams to three sets twice before reaching her first Grand Slam final for five years.